4-3-1.php

php电子书

4-3-1.php
<br>接口的继承 
<?
interface User{
	public function getName();
	public function setName($_name);
}

interface VipUser extends User {
	public function getDiscount(); //添加了获得折扣的抽象方法.
}

class Vip implements VipUser {
	private $name;
	private $discount = 0.8;// 定义折扣变量
	
	public function getName(){ //实现getName方法
		return $this->name;
	}
	
	public function setName($_name){//实现setName方法
		$this->name = $_name;
	}
	
	public function getDiscount(){//实现折扣方法.
		return $this->discount;
	}
}
?>